{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949536,-0.313657,0.000000,0.000000,0.175139,-0.530200,0.829586,0.000000,-0.259659,0.786067,0.560960,0.000000,-1657886.599416,5018931.373098,3557677.502203,1],    "boundingVolume": {    "region": [1.889757,0.595412,1.889919,0.595678,0.000000,8.792672]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366982.b3dm"}}}